Drilling machine



me. 21,1926. v D. A.A cABoT DRILLING MAHINE Filed June 16, 192; 2Sheets--Sheel 1'- l Dec. 21 1926.

D. A. cABoT DRILLING MACHINE Filed June ie, 1921 2 sheets-sheet 2`embodying my invention;V

Patented Dec. 21, 192e; i

- 'narran are? s Duane A. oABoT, or Bosron, nassacrrnsnrms.'

. italian*v ne f DRILLNG MACHINE. i

l Application led June-i6;

Fig, l shows in elevation a breast stoper Fig.V 2 is acentrallongitudinal section on an enlarged scaleof thefe-ed cylinder andassociated parts;

Figs and 4 respectively are sections on the lines 3 3 and 4-4 `of Fig.2;

5 isa central longitudinal section on Y an enlarged scale through theupper end of Y in a more or less diagrammatic Vmanner the thesefiguresshowing sections on the: lines the piston rod and associatedparts;

Fig. 6 is a fragmentary section on the line 5'ofI`ig.5;' 'l

/ `Figs. 7, 8, 9 and l0 respectively illustrate operation of thecontrolling valve, each of a-a and li-ZJ of Fig. 6. s

Referring to the drawings, I have shown a drill vbit l operated by adrill bit actuator B, the latter being ofany suitable or usual type andas indicated one actuated by'iluid pressure. Theactuator 8 is carried inslidable relation to the feedingl device indicated in its entirety at,5, this device having the rearwardly extending movable member 7. andconnected portion 9, the latter being attached to the actuator-in orderthat operation ofthe feeding devicewill move the latter. A

As illustrated the feed cylinder `comprises a cylindrical tube 11,.which may be formed of a length ofrcoinmercial stock, and surroundingthe feed cylinder at opposite ends thereof are rings 1B secured to thefeed cylinder in any suitable manner,` as for exlample by welding. 1 Thefrontand rear cylinder vheads l5 are each provided withafreducedvdiameter portion 17 which enters the bore ofthe tube 11 andprovides a shoulder 19 which abuts-the end thereof. The 'cylini derheads may be secured in any suitablemanner'and as shown I have .providedfor this purpose boltsl lextending through the perferated' ears fprmed,on: the cylinder` yhead and the positions I herein provide a strap 47passing' member.` i supporting 1921. serial No. rvs/gli?.

perforated ears 25 formed on the rings 13. i j l .f

w Supported by the 'rings I her-ein provide a pair .of parallel flongitudinally extending -members 27, Athese members'and the ringsybeing fixed to each other Vto form' a single I member formed asaunit-ary casting. Each member 27 is recessed to provide a slot 29extending longitudinally throughout the length of the member which slotreceives the .guides Slsupporting Vthe drill bit actuator. Althoughthese guides may be made integral withthe casing of the drill actuator",I have shown them as'part of the cradle 33, said cradle `being'providedat opposite ends with pairs of perforated ears 35 which l receive thelower pair vof four side bolts 37 holding the sections of the drillactuator in assembled relation. As the sp-eciiicnature of thel drill bitactuator and the cradle do not 'form part of my presentinvention thesame will not befurther described.

' rS'aupporting thefmachijne I herein provide asuitab le meansforattachment to a mine column, a tripod or the like and as shown in thedrawings this is exemplified yby the trunnion are va -of rings Y41 whichIsurtube 1l. For preventingl relative rotation :trunnion Integrallyform-ed withthe i' between the A trunnion and the cylinder1 andy y fortransmitting the stresses occasioned by the drill actuator' directly tothe trunnion I provide each ring at-itsupper portion with a pair ofupstanding portions providing flat surfaces 43 in sliding Contact withthe lon- 'gitudinally ventendingsurfaces 45 formed on the lowerinostportion of each of the members 27. g It will be noticed by this meansthe trunnion may be moved. to dierent posii tions along the feedcylinder and is splined "thereto to prevent relative angular movementbetween the parts.

For clamping the trunnion in its adjusted Y brackets', each providedwith a perforation 57 for receiving the bolt. Screw-thread- -edlyengaged withthe Vbolt is ay nut 59 by -lg M9' .Y

lmeans'rof whichptlleabolt head'l 'mayn fm1) f i the 'trunnion with icaused toidraw the strap 47 and r'rings-11 tightly into engagement withthe-cylinder to prevent movement of the trunnion.

. Slidably mounted in the feed cylinder andV l1 in Huid-tight engagementwith the Walls" *thereof is shown a piston 63 to which is connected thepiston rod Vformed byl the pro jecting members7 and 9 heretoforereferred to. These members herein'comprise an outer Atube 65 andan innerVtube 67, lthe former communicating' VWith the VVrearward" end of thefeed vcylinder by means of-va passage G9 formed radially throughthe wallyof the tube adjacent its point lof'connection with the pis- `ton andthe latter communicating ivith vthe forward end of the' feed c fhnderthrouo'ha 5 e passage 71 formed through the endWva-llk of the piston.rlhe portions-7 and 9 ofthe'rod are connected? by a transverse portion73 servingas Va handl-effor manually" slidingV the drill bitactuatorfa'l'on'g` tlieways and the upperl end of tl1`e`port1on9 isiconnected to the-drill bit actuator asf'shovvnzin Fig;A` 1;

Referring to Figs.' 1' and 5*' If have shown the?V actuator providedwith Yprojecting valve casingff' to which is! connected the airV hose'`connection 77' for conveying compressed air for operating. the actuatorand the feeding mechanism.'

7 9 into Which. is'screwed aV nipple 8l having the vfrusto-conicalrecess 83 for receiving the lcorrespondingly shapedv end 85 Vof the rod65,tl1e latter being provided with a Vcollar87 forming ahshoulderengaging the'l'lange- 89V of the unionrnut 91 and' the latterVscrewthreadedlyengaging the nipple to dran7 the endV 8.5 into 'the'socket.' Y The forward fac-e ofi the' nipple tits the bottomY 'ofv thesocket in a. Vfluidi-tight'V manner andi has formed ltherein thecircular groove 93 v which com-Y municates With the passage 95 leadingto the'va'lve and. withV passages'QVleading to aV circular groove-99formedy in the sur'faceof the recess 83.v The end'portion 851of the tube65 isI provided with radial passages 101 Which when the device isassembled communicate With Vthe groove 99'so as to place the interior-ofthe tubel 65 in communication with theval've casing. Theupper end of thetube (3751 have'shown supported 'in' the'bushing 103 carried by the end'of the tube 65 y and the other end ofthe tube (i5-in` asimilar v bushing104 Vlocated' forwardly ofc t'h-eopening 69 ofthe rodg; Thenterior'ofithe tube 67 communicates with theQinteriOrY of the nipplethelatter o'fivliich is placed 1n fcommunicationwith the valve casingVby Vmeaii'sof a passage 105` locatedzin the same plane asv the" passageA In the valve casing 7 5 isin'oifin'ted'the con? trolling valve' 107which' isl' o fl frustoconicalv turning *plugl typeJ and: isvp'rovided imaar uiteen; genaue ,Y A

vvitli anoperat'ing handle 109jan` isggprofr1min-- On' the 'frearwar'dYsideVV of thel valve casing Il provide a socket Chiel tained in constantcommunication with the air 'hose connection 77'in1 a. manner readilyunderstood bythose skilled in the art- In the same planeV as thepassages 95 and 10a Vtl1e valve is provided-Withr a radial passage 113'yand an arcual groove 115, the ends of the groove being spaced angularlya distance greater' th'anthat between the remote sides of thepassa-ges95 and'105` and the passage 113 being of angular extent' less than theangular distance between the adjacent sides e l Y of these passages.

best indicated by- Eigs; 72, 8*,'9and 10.v lhen the". valve is'finl the'position` illustrated by Fig.' 7 the supply oftmotive tiuid tothea-ctuator and each tubefis interrupted: and like- Wi se is th-eVcommu'nication between the tubes and the atmosphere.' Ifv thegvalve is'moved clockwise or countercloclnvise'from the position illustrated byFig. 7, respectivelyr to. those illustrated by Figs. Sor 10, one or'theother of the passages-.95 and=105` will be placed in communication witha source of Vmotivev fluid supply-'by means ofl thefpassa9e'113' ofthevalve7 While the remaining passage Will be placed inl co'mmunicationkwith the atmosphere .bymeans oftheV groove 115 and passage 117.` 'Asshown byv Fig; 85

Ythepassage 9gis supplied with motive fluid and the passage isyconnected totheatmosphereiand this admits motiveffluidY to the rearward` end ofithe `Afeed` cylinder and Yvents the forwardiend of thefeed cylinder which Y,causes the feedA piston to'movefthe drill bit `uptoY tlie'rock. Willen the valve is moved to the position shownby Fig.107 the supply andl venting of the feedY cylinder is the re` verse ofthat when. thel valve is in the position of Fig. 8 andthe piston Williretract` the drill'bit from the rock. When thevalve is in'xeitlier ofthe positions justmentioned.,V

the drill bit actuator may be supplied with Vmotive iiuid or said supplymay be interruptedgfor` eXampldfin the position shown byFig. 85 if thevalve isfturned' slightly infra eountercloclrivise direction,thepassager 119 Will( be placed incommunication with the passage-121,which ywill cause the drill bit to vbeactuatf-d'v and at the saine' timethe other conditions established by vthe valvegiii the poslt-1on1shoivnlby F1g-18 vvill remain uninter-V ruptfed :Similarly: if thefvalve is' intliefpe sition ircv Fig, and'. it is nievedsliglrtly infavalve will supply motive fluid to the passage 121 to supply the drillbit actuator Without y i interrupting the supply to the feed cylindervalve inl said position..

sa 192i.

or the venting thereof established by the If desired, the valve .may benormally `maintained in a position slightly counter- 'at the sametimemotivefiuid is supplied tok the Vpassagei1'21 through the passageV119 to cause the actuator to operate. Itv the'valve is moved ,slightlycounter-clockwise from thisv position the supply to the actuator isinterrupted While still maintaining the ventingofboth Vends of thecylinder. This enables the operator to move the bit up to the .rock andmanually operating the feed to spotv `the vhole after which operationthe,` valve maybe moved either to the `position'shoivn` by Fig. 8 tocause thedrill bitto be fed byv vfluid pressure or to .a positionintermediate thatshown by Figs. Sand 9 to cause` it` to be -fed by fluidpressure lWith the drill vbit actuating. After the hole is drilled tothe depth desired the valve may be ,turned further in a clockwisedirection'to the position shown by Fig. 7 'to stop the operation of boththe actuator and the lfeed-or tui'ned further in a clockwise directionto the position shown by Fig. 1-0 lto `cause the drill bit to beretracted from the hole. If during the retracting operation the drillbit should l stick audit-should be necessary to putthe actuator intooperation, Vthe `valve Scan be moved slightly in a clockwise directionfrom the position shown by Fig. 10 which Will cause the actuator tooperate while the bit is Vbeing retracted.

Y The invention disclosed in this application constitutes an.improvement on the inventions of George H. Gilman disclosed'in hisV.applications SerialV Nos. 442,094 and-411,562,

respectively tiled Alebruary 3, 1921 and `May Although vI have describedone specific .embodiment of my invention for purposes of illustrationitV is to beunderstood that wide deviations mayV be Vmade therefromWithout departing from the spirit of my invention@ Claims-fj 1. Amachine ofthe a stationary feed cylinder forniedf' ofa length of tubing,a member having spaced parallel i longitudinal 'portions' forming spacedWays .for slidinglysupporting said actuator and having transverseportions integral with and connecting said Ways, said characterdescribedk liaving'in combination a drill bit actuator,Y

Atransverse portions jbeing formed to Aconform i tol the' surface'ofsaid tubing and secured thereto ,by Welding, ra feed piston ,inV saidcylinder ysecured to said actuatorfor'sliding the latterrelativelytosaid cylinder, and a partfor connecting said machine .to asupport. 2; A' machine lhaving in combination a drill bit actuator, astationary feed cylinderv formed of a length -of;tubing, a niemberhavingspaced parallel fvlongitud-mal portions forming spaced Ways forslidingly supportiiigsaid actuator and Ahaving transverse "portionsintegrall With and connecting saidfwaysysaid transverse Vportions beingformed` to` conform to the surface of said tubing and securedy theretoby welding, a feed .piston in .said cylinder secured to`saidactuatorffor4 sliding thelatter relatively to said cylinder, and apart for connectingl said machine to a'support slid- 'of the,characterdescribed able relatively 4to said' cylinder between itsends:

3. Afinachine Y having in combination a drill bit-actuator, a

vstationary feed cylinder formedfofla length of tubing, amember havingspaced parallel long i'itudina'l portions #forming spaced Ways `forslidingly supportingsaid actuator andl having transverse portionsconnecting said Ways, said transverse portions being at the sidesof/said Waysopposite said actuator :and being formed with perforationsthroughV Which said tubingL isA inserted," said perforations conformingto thesurfaceof said tubing 'and' said tubing being Welded to said offthe character` described ioc- -transverse portions, a feedv piston,insaid ,Y

.cylinder-.secured to saidiactuator J.for slidfingfthejlatterrelativelyv to said' cylinder,l `and means vfor. connecting the,machineV toV .a support.

1-...A machine ,of the., characterv described `having in combination `aldrill bit actuator,

'a stationary feed cylinder formed of a length of tubing, a memberhaving longitudinal portions forming spacedrvvays for slidiiiglyvsupporting said actuatorrand having transverse portions connecting saidlongitudinal portionsone ofsaid transversefportions be- "fing in theform of a ring at the underside of, said longitudinal portionsfat oneend edthrough said ring,ra headfor saidcylinl'dei at that end thereoflWhich-is inserted y,through said. ring, and boltsV connecting saidheadand ring for dravvingsaid head toward said ring.

5. A' machine of the lcharacter .described Vhavingin combination adr-illbit actuator, a

stationary-feed cylinder lformed of a-leiigth of tubing, anieinberlhaving longitudinal' lit) thereof, an end of said tubing beinginsertportions forming spaced Ways for slidiiigly ljsupportingsaidactuatpr and having..trans-`V verser portions connecting said--longitudinal portions and situated `atytlie and portions thereof, saidtran'sver'seportions conforming 'K Ltothe-surface of said tubing, andapart for connecting said machine `to a support slidf ing.longitudinally of said cylinder between said transverse portions,v

1 16. A machin'ezofV the character described? having in combination adrill bit actuator', a. stationaryfeed cylinder formed ofa length oftubing, fa member vhaving longitudinal portions forming 'spaced Ways forslidingly `supporting said actuator andhaving transverse portionsAconnecting said longitudinal portions, one of said transverse portionsbeing in the form 'ofaring atthe under side` yof said longitudinalportions at one end thereof, an end-of saidtubing being in'- sertedthrough said ring, and a head for said cylinder Vattached tofone of saidtransverse portions. by' Lmeans formoving said head vlongitudinallyofsaid cylinder.v

Ina machine of the character described,

a tubular feed cylinder, means providinga clamping said' member to saidcylinder.

8. In amachineof the character described,

`tubular feed cylinder, a member providing Ways, said'member beingspaced from said cylinder intermediate" its ends and its ends beinglcarried by fsaid cylinder, a-nd armember providing for attachment to aysupport and being slidably carriedby said. cylinder intermediate theVends of saidfirst named member.

' a tubular feed cylinder,`a member providing 9., In a'machin'e of thecharacter described,

Ways', saidmemberbeing spaced from said cylinder intermediate its endsand its ends vbeing carriedbyl said cylinder, avmember providingforattachment to support and being slidably, carried by said cylinderini l termediate the'ends of said first named member,f and means forisecuring said second Ynamed member in adjusted. position.

10. Ina machine of the character Vde*- scribed, a tubular feedlcylinder7 a member providing Ways, said member being spaced `from saidcylinder intermediate'its ends vand its'uendsbeing carried bysaidcylinder,

- member providing for attachment' to sup-V port and beingslidably`carried bysai'd cyl-' inder intermediate the" ends off saidx firstnamed member, and .means providedy said fi'rst named.memberv forpreventing rotation of said second named memberrelativelyto 'saidcylinder l Y scribed, means? prevailing way for a@ drill o actuator, acylindrical member carrying said means and adjustably supporti-ng'a'seco'ndl iriember formcv'ement along iti, said secondmember-'providing for attachment to aY si'ip-l 1 port foriy the vmachine, 'i and"v said iirst` named same to said cylinder.

ymeans and saidkr second member being in sliding contact yto prevent'angular V'movedrical member. Y `f Y 12.v In a machine 1 of' thecharacter de- Vment of said secondmember on saidcylin-k scribed, a feedcylinder, a member providing a way and carried byV said Cylinder inspacedrelationthereto, and a member providing for attachment to asupport slidably carried'by said cylinder and contacting said firstnamed member. `f

v 18. In ,al machineV ofthe character described, a feed cylinder, amember provid-y ing a Way and carried by 'said cylinder in spacedrelation thereto, and a` member; providingrfor attachment to," a.support slidably carried by said cylinder andV contacting` said Vfirstnamed member, and means for secur.

ing said last named member inadgu'sted position. i Y

14:. In 'a .machine of the characterdescribed, means for attachingthe'macliine to a. support, a `member providingfa slidable` support forav drill actuator, lsaid means pro- `viding a slidable support for saidmember,

a feed cylinder forsaid `drill actuator attached to said .membeig saidfirst` named means including 'aclamp for securing the 15. In a machine'of the character described, a member having Ways for slidingly Ysupporting a drill actuator, a tubular feed cylinder carrying saidmember, and means 'K comprising a member separate from said first namedmember and directly carried by said cylinder for attaching saidcylinderV to 'a support for said machine.

scribed, a drill actuator, the spaced parallel members 27V providingWays for supporting and attached to saidfactuator.

16. In a machine of thecharacterdel 1054 `said actuator, thetransverselydisposed ring.v v

17. In aV `machine'of the character del scribed, a fluid operated .drillbit actuator,` a fiuid operated feeding device for said actuatorcomprising a' stationary cylinder. and a movable piston,rsa`idV actuatorbeing mounted on said cylinder at the side; thereof 'for slidingkmovement parallel to the axis of said cylinder, a 'connection betweensaid. Y

actuatorand saidpiston, said connection comprising a .substantiallyU-shaped tube .projecting'from the rearward end of said 11'. Inmaeh'inefc the-character ce' cylinder arranged with its legssubstantially tube, said tubes being' respectively in iiuid vrcommunication lWithY said cylinderat opposite ysides' ofs'aid piston,and a-V singlevalveffl'go mounted on said cylinder at the Aside thereoffor sliding movement parallel to the axis of said cylinder, aconnectionbetween said actuator vand said piston, said connection comprising asubstantially U-shaped tube projecting from the rearward en d of saidcylinder arranged with its legs substantially in a plane including theaxial lines of said cylinder and drill bit actuator, a separate tubecarried internallyT of the first mentioned tube, said tubes beingrespectively in fluid communication with said cylinder at opposite sidesof said piston,*and a single valver for controlling the iiuid admittedto said actuator and each tube and operative first to cause movement ofsaid piston and afterward to supply said actuator without interruptingsaid movement. Y

19. In a machine of the character de- Y scribed, a fluid operated drillbit actuator,

a fluid operated Vfeeding device for said actuator and comprising alstationary cylinder and a movable piston, said Vactuator being mountedon said cylinder at the side thereof for sliding movement parallel tothe axis of said cylinder, a connection between said actuator and saidpiston, said connection comprising a substantially U-shaped tubeA,projecting from the rearward end of said cylinder arrangedwith itslegs substantially 'in a plane including the axial lines of saidycylinder and drill. bit actuator, a separate tube carried internally ofthe first mentioned 1 tube, said tubes being respectively in fluidcommunication with saidl cylinder at opposite Sides of said piston, andcoordinated Yvalvular means for controlling the fluid admitted to saidactuator and each tube.

20. In a machine of the characterjde-vr scribed, a fluid operated drillbit actuator,

afluid operated feeding device` for said actuator and comprising astationary cylinder and a movable piston, said actuator being mounted onsaid cylinder at the side thereof for sliding movement parallel totheaxis ofsaid cylinder, a connection between. said actuator and saidpiston,said connec'-,y

tion comprising a substantially U-sliaped tube proJecting from therearward end or said cylinder arranged with its legs substantially in aplane including the axial* lines of said cylinder and drill bitactuator,

lco

a separate tube carried internally of the` first mentioned tube, saidtubes being respective-` ly in fluid communication with said cylinder atopposite sides of said piston, and' coordi-v nated valvular meansforcontrolling the fluid admitted to said actuator .and each actuatorwithout ,interrupting said movement.

In a machine of the character des scribed, a fluid operated drill bitactuator,

a fluid operatedv feeding device for said actuator and comprising astationary cylinder and a movable piston, said actuator being mounted onsaid cylinder at the side thereofl for sliding movement parallel to the,tu/be, and voperative first to lcause movement Y of said piston andafterward to supply said axis of said cylinder, a connection between isaid actuator and said piston, said connection comprisingasubsta-ntially U-shaped tube projecting from the rearward end of saidcylinder arranged with its legs sub-l` stantially ina plane including`the axial lines of saidcyliiider and drill bit actuator, a

separate tube carried internally of the first mentioned tube, said tubesbeing respective-` ly in fluid lcom'iiiiunication with said cylinder'atopposite sidesy ofsaidvpiston, and a single valve havinga 'position iiiwhichV 1t is operativeto exclude admission of motive lfluid to bothtubes and to said'actuatorand roperative bymovement thereof from saidIposition to supply one of said tubes with `motive fluid to theexclusion of the other and to connect said otherto theatmosphere andunder such condition at'will'to supply said actuator with motive fluid.

22. In a machine of the character de-r` i scribed, Va fluid operateddrill bitA actuator,

ja fluid operated feedingv device for said actuator and comprisingastationary cylinder and a movable piston, said actuatorv being mountedon said cylinder at the side thereof for sliding movement parallel totheaxis of said cylinder, a connection kbetween said actuator andsaid-piston,"said connection comprising a substantially U-sliaped tubeprojecting from the rearward end of c said cylinder arranged with itslegs substantially in a plane including the axial lines of said cylinderand drillhbit actuator, ag sepa-V rate tube carried internally of thefirstl inenfluid communication with said cylinderl at opposite sides ofsaid piston, andV a single valve having a position in which it isoperative to exclude admission of motive fluid to lboth tubes andto saidactuator and movable therefrom in opposite directions selectively tionedtube, saidy tubes being respectivelyvinV to supply either of said tubesto the exclu 'Y sionfof the other and connect said other to theatmosphere and under such condition at will to supply saidactuator.A

In testimony whereof, I have signed my Y name to this specification.

DEANE A. oABoT.

